1 files changed, 358 insertions, 0 deletions
diff --git a/ui/ncurses/nc-menu.c b/ui/ncurses/nc-menu.c
new file mode 100644
index 0000000..0a76b11
--- /dev/null
+++ b/ui/ncurses/nc-menu.c
@@ -0,0 +1,358 @@
+/*
+ *  Copyright (C) 2009 Sony Computer Entertainment Inc.
+ *  Copyright 2009 Sony Corp.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; version 2 of the License.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#define _GNU_SOURCE
+
+#include <assert.h>
+#include <errno.h>
+#include <string.h>
+
+#include "log/log.h"
+#include "talloc/talloc.h"
+#include "ui/common/ui-system.h"
+#include "nc-menu.h"
+
+/**
+ * pmenu_exit_cb - Callback helper that runs run menu.on_exit().
+ */
+
+int pmenu_exit_cb(struct pmenu_item *item)
+{
+	assert(item->pmenu->on_exit);
+	item->pmenu->on_exit(item->pmenu);
+	return 0;
+}
+
+/**
+ * pmenu_find_selected - Find the selected pmenu_item.
+ */
+
+struct pmenu_item *pmenu_find_selected(struct pmenu *menu)
+{
+	return pmenu_item_from_arg(item_userptr(current_item(menu->ncm)));
+}
+
+static int pmenu_post(struct nc_scr *scr)
+{
+	int result;
+	struct pmenu *menu = pmenu_from_scr(scr);
+
+	result = post_menu(menu->ncm);
+
+	nc_scr_frame_draw(scr);
+	redrawwin(menu->scr.main_ncw);
+	wrefresh(menu->scr.main_ncw);
+
+	return result;
+}
+
+static int pmenu_unpost(struct nc_scr *scr)
+{
+	return unpost_menu(pmenu_from_scr(scr)->ncm);
+}
+
+static void pmenu_resize(struct nc_scr *scr)
+{
+	/* FIXME: menus can't be resized, need to recreate here */
+	pmenu_unpost(scr);
+	pmenu_post(scr);
+}
+
+/**
+ * pmenu_item_init - Allocate and initialize a new pmenu_item instance.
+ *
+ * Returns a pointer the the initialized struct pmenu_item instance or NULL
+ * on error. The caller is responsible for calling talloc_free() for the
+ * returned instance.
+ */
+
+struct pmenu_item *pmenu_item_alloc(struct pmenu *menu)
+{
+	/* Items go with the menu, not the pointer array. */
+
+	struct pmenu_item *i = talloc_zero(menu, struct pmenu_item);
+
+	return i;
+}
+
+struct pmenu_item *pmenu_item_setup(struct pmenu *menu, struct pmenu_item *i,
+	unsigned int index, const char *name,
+	const char *description)
+{
+	assert(i);
+
+	if (!i)
+		return NULL;
+
+	i->i_sig = pb_item_sig;
+	i->pmenu = menu;
+	i->nci = new_item(name, description);
+
+	if (!i->nci) {
+		talloc_free(i);
+		return NULL;
+	}
+
+	set_item_userptr(i->nci, i);
+
+	menu->items[index] = i->nci;
+
+	return i;
+}
+
+/**
+ * pmenu_move_cursor - Move the cursor.
+ * @req: An ncurses request or char to send to menu_driver().
+ */
+
+static void pmenu_move_cursor(struct pmenu *menu, int req)
+{
+	menu_driver(menu->ncm, req);
+	wrefresh(menu->scr.main_ncw);
+}
+
+/**
+ * pmenu_process_key - Process a user keystroke.
+ */
+
+static void pmenu_process_key(struct nc_scr *scr)
+{
+	struct pmenu *menu = pmenu_from_scr(scr);
+	struct pmenu_item *item = pmenu_find_selected(menu);
+
+	nc_scr_status_free(&menu->scr);
+
+	while (1) {
+		int c = getch();
+
+		if (c == ERR)
+			return;
+
+		/* DBGS("%d (%o)\n", c, c); */
+
+		if (menu->hot_key)
+			c = menu->hot_key(menu, item, c);
+
+		switch (c) {
+		case 27: /* ESC */
+			if (menu->on_exit)
+				menu->on_exit(menu);
+			nc_flush_keys();
+			return;
+
+		case KEY_PPAGE:
+			pmenu_move_cursor(menu, REQ_SCR_UPAGE);
+			break;
+		case KEY_NPAGE:
+			pmenu_move_cursor(menu, REQ_SCR_DPAGE);
+			break;
+		case KEY_HOME:
+			pmenu_move_cursor(menu, REQ_FIRST_ITEM);
+			break;
+		case KEY_END:
+			pmenu_move_cursor(menu, REQ_LAST_ITEM);
+			break;
+		case KEY_UP:
+			pmenu_move_cursor(menu, REQ_UP_ITEM);
+			break;
+		case KEY_DOWN:
+		case '\t':
+			pmenu_move_cursor(menu, REQ_DOWN_ITEM);
+			break;
+
+		case KEY_LEFT:
+		case 'E':
+		case 'e':
+			if (item->on_edit)
+				item->on_edit(item);
+			break;
+		case '\n':
+		case '\r':
+			if (item->on_execute)
+				item->on_execute(item);
+			break;
+		default:
+			menu_driver(menu->ncm, c);
+			break;
+		}
+	}
+}
+
+/**
+ * pmenu_grow - Grow the item array.
+ * @count: The count of new items.
+ *
+ * The item array must be disconnected prior to calling pmenu_grow().
+ * Returns the insert point index.
+ */
+
+unsigned int pmenu_grow(struct pmenu *menu, unsigned int count)
+{
+	unsigned int tmp;
+
+	assert(item_count(menu->ncm) == 0 && "not disconnected");
+
+	pb_log("%s: %u current + %u new = %u\n", __func__, menu->item_count,
+		count, menu->item_count + count);
+
+	/* Note that items array has a null terminator. */
+
+	menu->items = talloc_realloc(menu, menu->items, ITEM *,
+		menu->item_count + count + 1);
+
+	memmove(menu->items + menu->insert_pt + count,
+		menu->items + menu->insert_pt,
+		(menu->item_count - menu->insert_pt + 1) * sizeof(ITEM *));
+
+	memset(menu->items + menu->insert_pt, 0, count * sizeof(ITEM *));
+
+	tmp = menu->insert_pt;
+	menu->insert_pt += count;
+	menu->item_count += count;
+
+	return tmp;
+}
+
+static int pmenu_item_get_index(const struct pmenu_item *item)
+{
+	unsigned int i;
+
+	for (i = 0; i < item->pmenu->item_count; i++)
+		if (item->pmenu->items[i] == item->nci)
+			return i;
+
+	pb_log("%s: not found: %p %s\n", __func__, item,
+		(item ? item->nci->name.str : "(null)"));
+	return -1;
+}
+
+/**
+ * pmenu_remove - Remove an item from the item array.
+ *
+ * The item array must be disconnected prior to calling pmenu_remove()
+ */
+
+int pmenu_remove(struct pmenu *menu, struct pmenu_item *item)
+{
+	int index;
+
+	assert(item_count(menu->ncm) == 0 && "not disconnected");
+
+	assert(menu->item_count);
+
+	pb_log("%s: %u\n", __func__, menu->item_count);
+
+	index = pmenu_item_get_index(item);
+
+	if (index < 0)
+		return -1;
+
+	/* Note that items array has a null terminator. */
+
+	menu->insert_pt--;
+	menu->item_count--;
+
+	memmove(&menu->items[index], &menu->items[index + 1],
+		(menu->item_count - index + 1) * sizeof(ITEM *));
+	menu->items = talloc_realloc(menu, menu->items, ITEM *,
+		menu->item_count + 1);
+
+	return 0;
+}
+
+/**
+ * pmenu_init - Allocate and initialize a new menu instance.
+ *
+ * Returns a pointer the the initialized struct pmenu instance or NULL on error.
+ * The caller is responsible for calling talloc_free() for the returned
+ * instance.
+ */
+
+struct pmenu *pmenu_init(void *ui_ctx, unsigned int item_count,
+	void (*on_exit)(struct pmenu *))
+{
+	struct pmenu *menu = talloc_zero(ui_ctx, struct pmenu);
+
+	if (!menu)
+		return NULL;
+
+	/* note items array has a null terminator */
+
+	menu->items = talloc_zero_array(menu, ITEM *, item_count + 1);
+
+	if (!menu->items) {
+		talloc_free(menu);
+		return NULL;
+	}
+
+	nc_scr_init(&menu->scr, pb_pmenu_sig, 0, ui_ctx, pmenu_process_key,
+		pmenu_post, pmenu_unpost, pmenu_resize);
+
+	menu->item_count = item_count;
+	menu->insert_pt = 0; /* insert from top */
+	menu->on_exit = on_exit;
+
+	return menu;
+}
+
+/**
+ * pmenu_setup - Create nc menu, setup nc windows.
+ *
+ */
+
+int pmenu_setup(struct pmenu *menu)
+{
+	assert(!menu->ncm);
+
+	menu->ncm = new_menu(menu->items);
+
+	if (!menu->ncm) {
+		pb_log("%s:%d: new_menu failed: %s\n", __func__, __LINE__,
+			strerror(errno));
+		return -1;
+	}
+
+	set_menu_win(menu->ncm, menu->scr.main_ncw);
+	set_menu_sub(menu->ncm, menu->scr.sub_ncw);
+
+	/* Makes menu scrollable. */
+	set_menu_format(menu->ncm, LINES - nc_scr_frame_lines, 1);
+
+	return 0;
+}
+
+/**
+ * pmenu_delete - Delete a menu instance.
+ *
+ */
+
+void pmenu_delete(struct pmenu *menu)
+{
+	unsigned int i;
+
+	assert(menu->scr.sig == pb_pmenu_sig);
+	menu->scr.sig = pb_removed_sig;
+
+	for (i = item_count(menu->ncm); i; i--)
+		free_item(menu->items[i]);
+
+	free_menu(menu->ncm);
+	delwin(menu->scr.sub_ncw);
+	delwin(menu->scr.main_ncw);
+	talloc_free(menu);
+}